具有以下功能：一个学生的信息包括学号、姓名、英语成绩、语文成绩、数学成绩，要求输入每位学生的信息并显示这些信息；同时计算每位学生的总分即英语、语文、数学成绩之和，并对输入的若干学生按总分排名，按总分名次输出每位学生及其信息；最后计算这些学生的英语平均分、语文平均分和数学平均分，并输出结果。-Has the following features: a student' s study information including number, name, score in English, Chinese score, math score, asked to enter information for each student and display such information　simultaneously calculate the total score for each student that is in English, Chinese, Math Score the sum of the input by the total number of students ranked by total output for each student and his ranking information　Finally calculating the average score of students in English, Chinese and math average score average score, and output results.